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A Hacker News user asks if anyone is using Google's A2A agent-to-agent protocol, noting confusion six months ago and the rise of MCP, but now seeing potential for agent interaction.
Google released a free 50-page guide on AI Agent tools and interoperability, covering open protocols such as MCP, A2A, A2UI, AP2, and UCP.
Hugging Face and collaborators launch Agentic Resource Discovery (ARD), an open specification for dynamically discovering tools, skills, and agents at runtime, moving beyond static installation.
This vision paper argues that trust in Agent-to-Agent (A2A) networks must be integrated from the ground up, as existing agent alignment techniques are insufficient to address systemic vulnerabilities like adversarial composition and semantic misalignment.
A new book by Gigi Sayfan guides readers on building multi-agent AI systems from scratch using Python, MCP, and A2A protocols, focusing on custom orchestration rather than third-party frameworks.